899242491420 has 1152 divisors, whose sum is σ = 3711749529600. Its totient is φ = 178648436736.

The previous prime is 899242491419. The next prime is 899242491437. The reversal of 899242491420 is 24194242998.

It is a happy number.

899242491420 is a `hidden beast` number, since 8 + 9 + 92 + 42 + 4 + 91 + 420 = 666.

It is a super-3 number, since 3×899242491420³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1457442952 + ... + 1457443568.

It is an arithmetic number, because the mean of its divisors is an integer number (3222004800).

Almost surely, 2^899242491420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 899242491420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1855874764800).

899242491420 is an abundant number, since it is smaller than the sum of its proper divisors (2812507038180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

899242491420 is a wasteful number, since it uses less digits than its factorization.

899242491420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 899242491420 in words is "eight hundred ninety-nine billion, two hundred forty-two million, four hundred ninety-one thousand, four hundred twenty".